Drink coaster



FIG. 1 is a top plan view of a drink coaster showing my design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a back elevational view thereof; and,

FIG. 6 is a perspective view thereof. 

The ornamental design for a drink coaster, as shown and described. 